A structure fire caused about $100,000 in damage to a home on Chapman Circle in Woodland Saturday, firefighters reported.

Battalion Chief Rick Sander reported the blaze started on the eastern exterior wall of the home beneath a plastic overhang and then spread to the interior attic and eaves of the home primarily over the garage, as well as to a fence to the west between the home and a neighbor's yard.

Sander reported the cause of the fire was still under investigation as of late Saturday, however, it appeared as though discarded fireplace ashes in the yard waste toter may have been to blame.

Homeowner Christina Martin, who was in the home with her husband, Damian, at the time, said smoke alarms went off just prior to a loud "BOOM."

The Martin's were in another part of the house and able to escape unharmed. Neighbors and friends alerted Woodland firefighters at 12:05 p.m.

Sander reported the explosion was not the cause of the fire, but a propane cylinder being stored in the area of the fire which exploded.

Sander also reported a PG&E meter was damaged during the fire and crews had to extinguish the fire in order to turn off the burning gas being released. Requests were placed for PG&E, the Red Cross, and a Board-Up contractor to secure the building after extinguishment operations were complete.

Firefighters were initially dispatched to homes near the intersection of Sycamore and West Southwood Drive, but it was quickly apparent the fire had started at the Chapman Circle residence. The home is about three blocks east of Whitehead Elementary School.

Winds out of the north, blew the heavy black smoke toward the south as well as some flames, which threatened nearby trees.

Christina said she and Damian have been in the 1,600-square-foot home for six years. While the garage had a number of objects inside, neither of the couple's two vehicles - which were located in the driveway - were damaged.

Christmas gifts were also in another part of the house and Christina thought they, too, were OK.

Firefighters fought the blaze for about 20 minutes before bringing it under control. They remained on scene to completely knock down the fire for another hour or so.

Responding to the fire were three engines, a truck. The second alarm designation drew additional engines from the city of Davis, UC Davis Fire, West Sacramento and Willow Oak fire departments.

Sander reminded people that when cleaning out the fireplace, ashes should be placed in a metal buck and mixed with water prior to disposal in either a trash can or yard waste toter.